Soul.md: The "Soul" of AI, a Document That Could Change Agent Design

2/15/2026
2 min read

Soul.md: The "Soul" of AI, a Document That Could Change Agent Design

Soul.md

A concept called Soul.md is causing a stir in the AI community. It's not just a file, it's more likely to be a key paradigm for future Agent design.

What is Soul.md?

Concept

Soul.md is a special document used to define the "soul" of an AI Agent - including its personality, values, code of conduct, and goals. Just as humans have souls, Agents also need a core document to guide all their behavior.

Core Content

Content Structure

A complete Soul.md usually contains:

  • Identity Definition: Who is this Agent, its role and positioning
  • Core Values: Basic principles guiding decision-making
  • Code of Conduct: How to act in various situations
  • Capability Boundaries: Clearly define what can be done and what cannot be done
  • Learning Direction: How you want the Agent to grow and evolve

Why is it important?

Importance

  • Consistency: Ensure consistent behavior of the Agent in different scenarios
  • Controllability: Agent behavior can be adjusted by modifying the document
  • Explainability: Humans can understand the Agent's decision-making logic
  • Transferability: Soul.md can be shared and reused between different Agents

Practical Cases

Cases

More and more teams are starting to use Soul.md to manage their AI Agents. For example:

  • Customer Service Agent: Define a patient, professional, and user-centric personality
  • Programming Assistant: Define principles of rigor, efficiency, and focus on code quality
  • Research Assistant: Define values of curiosity, critical thinking, and pursuit of truth

Future Outlook

Soul.md may become standard practice in AI Agent development. It makes the Agent no longer a black box, but an intelligent entity with a "soul", principles, and that can be understood and trusted.

This paradigm shift may profoundly affect the way humans and machines interact and the design philosophy of AI.

Published in Technology

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